<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'admanager.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

  </head>
  
  <body>
	<form action="./adincreaes.jsp"  method="POST" enctype="multipart/form-data" onSubmit="return check();">
	图片<input type="file" name="ad" id="ad" onChange="show();"/><br/>
		<input type="submit" value="上传 "/>
		</form>
  </body>
</html>
<script>
function check(){
	var ad = document.getElementById("ad").value;
	var ad1 = /^.*(.bmp|.jpg|.BMP|.JPG|.gif|.GIF)$/;
	if(ad==""){
	alert("请输入要上传的图片");
	return false;
	}
	if(!ad1.exec(ad)){
	alert("请上传正确格式的图片 ");
	return false;
	}
}
</script>